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Old 11-05-2015, 20:44   #1
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Wiring a isolator with 2 alternator and 2 batteries

How to install battery isolator?

Presently, I have 2 outboards 135 and 9.9 hp mercury, and both motors are charging my main battery. I have another battery that's not being charged.

I bought a isolation that will charge two batteries from both of my motors.

My question is how to wire this isolator from the motors(alternator) to the batteries. I have directions, but I am confused by changing the wires from the regulator. Can I just take wires coming from alternator from the main battery and connect it to the isolator. Then, connected wires from the isolator to the batteries.

I purchased Promariner 2 alternator 2 battery isolator 70
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Old 12-05-2015, 00:22   #2
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Wiring a isolator with 2 alternator and 2 batteries

Quote:
Originally Posted by vstyn View Post
How to install battery isolator?

Presently, I have 2 outboards 135 and 9.9 hp mercury, and both motors are charging my main battery. I have another battery that's not being charged.

I bought a isolation that will charge two batteries from both of my motors.

My question is how to wire this isolator from the motors(alternator) to the batteries. I have directions, but I am confused by changing the wires from the regulator. Can I just take wires coming from alternator from the main battery and connect it to the isolator. Then, connected wires from the isolator to the batteries.

I purchased Promariner 2 alternator 2 battery isolator 70

Here's a link I found for your isolater from PM?
http://promariner.com/wp-content/upl...tor-Manual.pdf
It shows how to wire it in to the charge circuit depending on how many outputs you have, or separate alternators.
Pretty much outputs of the alternator(s) to the isolator, outputs of the isolator to the + battery posts.

I saw nothing said about doing anything with the regulator wiring. And that does not sound like anything that you should be changing wires to.
Just the outputs from the alternator to the isolator like you've mentioned.


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Old 12-05-2015, 21:18   #3
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Re: Wiring a isolator with 2 alternator and 2 batteries

get a blue sea ACR abd connect between the 2 batteries. easy. the isolator will be a bitch with outboards. they are for inboards.
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Old 13-05-2015, 08:47   #4
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Re: Wiring a isolator with 2 alternator and 2 batteries

Isolators have a constant voltage drop so they get hot and waste power. WIth the voltage drop your batteries may not get fully charged. A Yandina Combiner100 connected between the batteries will avoid having to make any changes to your alternator wiring and comes with unlimited warranty that will not be available on an isolator.
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